DOAJ Open Access 2021

Double-thin-shell approach to deriving total electron content from GNSS signals and implications for ionospheric dynamics near the magnetic equator

Takashi Maruyama Kornyanat Hozumi Guanyi Ma Pornchai Supnithi Napat Tongkasem +1 lainnya

Abstrak

Abstract A new technique was developed to estimate the ionospheric total electron content (TEC) from Global Navigation Satellite System (GNSS) satellite signals. The vertically distributed electron density was parameterized by two thin-shell layers (double-shell approach). The spatiotemporal variation of TEC (strictly speaking, partial electron content) associated with each shell was approximated by the functional fitting of spherical surface harmonics. The major improvements over the conventional single-shell approach were as follows: (1) the precise estimation of TEC was achieved; (2) the estimated TEC was less dependent on the choice of shell heights; and (3) the equatorial anomaly was captured more correctly. Furthermore, higher and lower shells exhibited a different pattern of local time vs latitude variation, providing information on the ionosphere–thermosphere dynamics.

Topik & Kata Kunci

Geography. Anthropology. Recreation Geodesy Geology

Penulis (6)

Takashi Maruyama

Kornyanat Hozumi

Guanyi Ma

Pornchai Supnithi

Napat Tongkasem

Qingtao Wan

Format Sitasi

APA MLA BibTeX

Maruyama, T., Hozumi, K., Ma, G., Supnithi, P., Tongkasem, N., Wan, Q. (2021). Double-thin-shell approach to deriving total electron content from GNSS signals and implications for ionospheric dynamics near the magnetic equator. https://doi.org/10.1186/s40623-021-01427-y

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Informasi Jurnal

Tahun Terbit: 2021
Sumber Database: DOAJ
DOI: 10.1186/s40623-021-01427-y
Akses: Open Access ✓